feedback threats

I did a deal with a new guy here on pbn.I just got a text saying he wanted to send me a project gun because it was not as complete to his liking.

The deal was my vice and spimmy for 4 of his 2k2 timmy's

Now he sent me 2 working and 2 not,I went and shipped to him anyway even though they where all supposed to function.

I offered to trade back and not he says he will not return the vice he cant afford to ship both back and if I did not tear apart one of the 2k2's he sent and finish the spimmy,he was leaving me bad feedback.He says he does not care about feedback so do what I must.